Standing Seam Clamp

ABSTRACT

A clamping assembly for attaching loads to various kinds of flanged seams, the assembly comprising a generally U-shaped clamp body, at least one clamping hammer disposed interior of the clamp body, the clamping hammer is secured to the clamp body along the longitudinal axis of the clamp body, at least one adjustment screw extending through the clamp body and adapted to selectively impinge against the clamping hammer and cause it to pivot about its axis or otherwise move inwardly within the clamp body, the adjustment screw extending transverse to the longitudinal axis of the clamping hammer, at least one locking screw adapted to selectively impinge against the clamping hammer to prevent pivoting of the same may be optionally provided whereby a standing seam received within the clamp body may be tightly grasped between the clamp body and the clamping hammer under action of the adjustment screw.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/456,679, filed on Mar. 13, 2017, which is a continuation of U.S.patent application Ser. No. 14/566,361 filed on Dec. 10, 2014 and issuedas U.S. Pat. No. 9,714,670 on Jul. 25, 2017, which is a continuation ofU.S. patent application Ser. No. 14/091,062 filed on Nov. 26, 2013 andissued as U.S. Pat. No. 8,910,928 on Dec. 16, 2014, which is acontinuation-in-part of PCT International Application No.PCT/US2012/039283 filed on May 24, 2012, which is a continuation of U.S.patent application Ser. No. 13/118,308 filed on May 27, 2011 and issuedas U.S. Pat. No. 8,528,888 on Sep. 10, 2013. U.S. patent applicationSer. Nos. 15/456,679, 14/566,361, 14/091,062, 13/118,308, andInternational Application No. PCT/US2012/039283 are hereby incorporatedby reference.

FIELD OF THE INVENTION

This invention is a clamp assembly for attaching loads to various kindsof flanged seams including, but not limited to, standing seam roofing.

BACKGROUND OF THE INVENTION

Standing seams are often used to interconnect metal panels to form theroof of a building or other structure. The seam is created by bendingand profiling together adjacent side edges of two metal sheets to forman upwardly extending portion that interlocks the sheets as it extendsthe width or length of the roof surface. The head or uppermost portionof the seam may be formed in a variety of shapes depending upon themanner in which the sheets are profiled together. For example, the headof a standing seam may be L-shaped, T-shaped, rounded, doubled over, orhave some other profile correlating to the nature of end use.

It is desirable to attach a structure to a standing seam, especially inthe case of roofing. Rooftops are obvious locations for mounting solarpanel arrays, walkways, plumbing, wiring or other ancillary structuresincluding but not limited to snow catchers, ice dams, etc.

When attaching a structure to a standing seam, drilling or penetrationof the seam is avoided because doing so can affect the life of the roof.Clamp assemblies that do not penetrate a standing seam are known;however, these devices use bolts that are tightened directly against theseam, which can damage the seam and ultimately affect the integrity ofthe roof. Prior art clamping assemblies also produce an uneven clampingpressure that is not evenly distributed against the seam, eventuallyleading to clamp or roof failure. Many other roof clamps are known, butin each of these cases the device is complicated and difficult toinstall quickly.

BRIEF SUMMARY OF THE INVENTION

The present invention is a clamping assembly comprising a generallyU-shaped clamp body for receiving a standing seam, an I-beam or similarstructure, either a pair of cooperating clamping hammers or a singleclamping hammer are disposed interior of the clamp body, the clampinghammers are hingedly secured to the clamp body along a longitudinal axisof the body and each is provided with at least one adjustment screwadapted to movably extend through the clamp body and selectively impingeagainst the hammer and cause it to pivot about its axis to open andclose the clamp, the adjustment screw being disposed transverse to thelongitudinal axis of the clamping hammer, each clamping hammer is alsoprovided with a typical or optional one locking screw that movablyextends through the clamp body to selectively impinge against the hammerand prevent pivoting whereby a standing seam or other structure receivedwithin the clamp body may be tightly grasped between the pair ofcooperating hammers (or single hammer) to clamp and lock it into place.

The present invention is also directed to a clamping assembly comprisinga generally U-shaped clamp body comprising two interconnected bodymembers for receiving a standing seam, an I-beam or similar structure,either a pair of cooperating clamping hammers or a single clampinghammer are disposed interior of the clamp body, the clamping hammers arehingedly secured to the clamp body along a longitudinal axis of the bodyand each is provided with at least one adjustment screw adapted tomovably extend through the clamp body and selectively impinge againstthe hammer and cause it to pivot about its axis to open and close theclamp, the adjustment screw being disposed transverse to thelongitudinal axis of the clamping hammer, each clamping hammer is alsoprovided with at least one locking screw that movably extends throughthe clamp body to selectively impinge against the hammer and preventpivoting whereby a standing seam or other structure received within theclamp body may be tightly grasped between the pair of cooperatinghammers (or single hammer) to clamp and lock it into place.

The present invention is also directed to a clamping assembly comprisinga generally U-shaped clamp body for receiving a standing seam, an I-beamor similar structure, either a pair of cooperating clamping hammers or asingle clamping hammer are disposed interior of the clamp body, theclamping hammers are hingedly secured to bottom of the clamp body andeach is provided with at least one adjustment screw adapted to movablyextend through the clamp body and selectively impinge against the hammerand cause it to pivot upwardly about its axis to open and close theclamp, the adjustment screw being disposed transverse to thelongitudinal axis of the clamping hammer, each clamping hammer may alsobe provided with at least one locking screw that movably extends throughthe clamp body to selectively impinge against the hammer and preventpivoting whereby a standing seam or other structure received within theclamp body may be tightly grasped between the pair of cooperatinghammers (or single hammer) to clamp and lock it into place.

The present invention is also directed to a clamping assembly comprisinga generally U-shaped clamp body for receiving a standing seam, an I-beamor similar structure, either a pair of cooperating clamping hammers or asingle clamping hammer that is generally I-shaped in cross section anddisposed interior of the clamp body within a longitudinal slot, theclamping hammers are fitted within the clamp body along a longitudinalaxis of the body and each is provided with at least one adjustment screwadapted to movably extend through the clamp body and selectively impingeagainst one side of the hammer to cause it to shift laterally to openand close the clamp, the adjustment screw being disposed transverse tothe longitudinal axis of the clamping hammer, each clamping hammer isalso provided with an increased clamping surface area to provide contactagainst a seam to be clamped whereby a standing seam or other structurereceived within the clamp body may be tightly grasped between the pairof cooperating hammers (or single hammer) to clamp and lock it intoplace.

The present invention is also directed to a clamping assembly comprisinga generally U-shaped clamp body for receiving a standing seam, an I-beamor similar structure, either a pair of cooperating clamping hammers or asingle clamping hammer are disposed interior of the clamp body, theclamping hammers comprise a block fitted with a washer and a rivetsecured to the clamp body along a longitudinal axis of the body and eachis provided with at least one adjustment screw fixed at one end thereofto the washer and the rivet and adapted to movably extend through theclamp body and selectively impinge against the block to cause it totravel inwardly within the clamp to clamp a standing seam, theadjustment screw being disposed transverse to the longitudinal axis ofthe clamping block. In the alternative, the washer and the rivet may bereplaced with a free spinning washer and nut to move the clamping block.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a perspective view showing a typical overlap type standingseam that may be clamped by the present invention;

FIG. 2 is a perspective view showing the clamp assembly according to thepresent invention with portions broken away;

FIG. 3 is a perspective view of the clamp shown in FIG. 2 when clampingstanding seam with portions of the clamp shown in broken lines;

FIG. 4 is a cross-sectional view taken along lines 4-4 of FIG. 3;

FIG. 5 is a cross-sectional view taken along lines 5-5 of FIG. 3;

FIG. 6 is a cross-sectional view of an alternative embodiment of theclamp assembly shown in FIG. 4;

FIG. 7 is cross sectional view of the clamp shown in FIG. 4 whenclamping a double lock type standing seam;

FIG. 8 is cross-sectional view of the clamp shown in FIG. 4 whenclamping a trapezoid double lock type standing seam;

FIG. 9 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 4 when clamping an angled seam;

FIG. 10 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 4 when clamping a seam having a round head;

FIG. 11 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 4 when clamping an off-set seam;

FIG. 12 is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention with a pair of protectivegaskets;

FIG. 13 is a cross-sectional view showing an alternative embodiment ofone clamp according to the present invention having an isolation gasketor membrane to protect a roof or other structure from vibration, sound,or the like or otherwise increase surface tension;

FIG. 14A is an exploded cross-sectional view showing an alternativeembodiment of the clamp according to the present invention.

FIG. 14B is a cross-sectional view of the clamp shown in FIG. 14A whenassembled and secured to a standing seam;

FIG. 15 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIGS. 14A and 14B;

FIG. 16A is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIGS. 14A and 14B;

FIG. 16B is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIGS. 14A and 14B;

FIG. 17A is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention and prior to securing to astanding seam;

FIG. 17B is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention when securing to a standingseam;

FIG. 18 is a cross-sectional view showing another alternative embodimentof the clamp according to the present invention when securing to astanding seam;

FIG. 19 is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention prior to securing to anL-shaped standing seam;

FIG. 20 is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention when secured to an L-shapedstanding seam;

FIG. 21 is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention;

FIG. 22 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 21;

FIG. 23 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 21;

FIG. 24 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 21;

FIG. 25 is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 21;

FIG. 26 is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention;

FIG. 27A is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 26;

FIG. 27B is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 26;

FIG. 28A is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention prior to clamping;

FIG. 28B is a cross-sectional view showing the clamp in FIG. 28A when ina clamping position;

FIG. 29A is a cross-sectional view showing an alternative embodiment ofthe clamp according to the present invention;

FIG. 29B is a cross-sectional view showing an alternative embodiment ofthe clamp shown in FIG. 29A;

FIG. 30 is an end view showing a tool according to the present inventionfor use when assembling a clamp to a standing seam;

FIG. 31 is a top view of FIG. 30;

FIG. 32 is a cross-sectional view showing an alternative embodiment of aclamp according to the present invention;

FIG. 33 is a cross-sectional view showing the tool in FIGS. 30 and 31fitted over a standing seam to be clamped;

FIG. 34A is a cross-sectional view showing the tool shown in FIGS. 30and 31 in use with the clamp shown in FIG. 32;

FIG. 34B is a cross-sectional view of FIG. 34A after the tool has beenremoved and the clamp is secured against a standing seam;

FIG. 35 is an exploded cross-sectional view of an alternative embodimentaccording to the present invention;

FIG. 36 is a cross-sectional view of a clamp fitted with the clampingstructure shown in FIG. 35 and prior to being secured to a standingseam;

FIG. 37 is a cross-sectional view of the clamp shown in FIG. 36 whenclamped to a standing seam;

FIG. 38 is an alternative embodiment of the clamp shown in FIG. 36; and

FIG. 39 is a cross sectional view showing another embodiment of theclamp according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a standard overlap-type standing seam SS comprising metalsheets 2 and 4 interconnected at upstanding portion 6 and head portion8. The standing seam SS is formed by bending or profiling togetheradjacent edges of sheets 2 and 4 to interlock the edges at head portion8 in a known manner. The present invention is applicable for clampingother standing seams as will be explained further below. A perspectiveview of the standing seam SS and sheets 2, 4 is illustrated in FIG. 3.

Referring to FIGS. 2 through 5, the clamp assembly CA of the presentinvention is shown in greater detail. As best seen in FIG. 2, the clampassembly CA comprises a generally U-shaped clamp body 10, formed frommetal such as extruded aluminum, or a high-density plastic, or othermaterial, and having a top 12 and sides 14 that define an interiorregion 16 for receiving a standing seam. The clamp body 10 may be ofvariable length and thickness depending upon the end use of the clampand the strength requirements necessary for that particular use.

Adjustment screws 18 are provided along both of the sides 14 of theclamp body 10. The apertures for each of the adjustment screws 18 aredisposed adjacent to the bottom edge of each side 14 and each extendsthrough the sides 14 so that the adjustment screw 18 may be selectivelymoved into and out of the interior region 16 of the clamp body 10.

Locking screws 20 may be provided along both of the sides 14 of theclamp body. The apertures for each of the locking screws 20 are disposedadjacent to the top edge of each side 14 and each extends through thesides 14 so that it can be selectively moved into and out of theinterior region 16 of the clamp body 10 to lock the clamp onto a seam aswill be further explained below. The number of locking screws 20 andadjustment screws 18 provided on the clamp is variable. In general, theclamp body 10 will have a pair of adjustment screws 18 on each of sideof the clamp, the pairs aligned as mirror images and at least onelocking screw 20 per side.

A threaded aperture 22 is provided within the top 12 of the clamp body10 to receive a threaded bolt (not shown) that may be used to attach asolar panel, wiring, or other structure to the clamp body 10. Similarly,and as best shown in FIGS. 3 and 4, a threaded aperture A may beprovided in either or both of the sides 14 of the clamp body 10 toreceive a threaded bolt (not shown) to attach a solar panel, wiring, orsome other structure to the clamp body 10. The adjustment screws 18 arealso illustrated in FIGS. 3 through 5. The locking screw 20 isillustrated in FIGS. 3 and 5, and the threaded aperture 22 is alsoillustrated in FIGS. 3 and 4. In FIG. 4, the threaded aperture is shownextending into the top 12.

Turning to FIGS. 3 through 5, additional features of the clamp assemblyCA are shown together with operation of the clamp. The interior region16 comprises side walls 24 and top wall 26. The width and height ofinterior region 16 may be varied depending upon the size of the standingseam to be clamped.

A pair of movable clamping jaws or hammers 28 are provided withininterior region 16 of the clamp body 10 for clamping against a seam. Asbest shown in FIGS. 4 and 5, the clamping hammers 28 are disposed asmirror images of each other, and in one embodiment, are generallyL-shaped to accommodate the head portion of a conventional folded seamas will be further explained below. The hammers 28 extend the length ofthe clamp body 10 from a first end to a second end and are pivotallysecured within the clamp body 10 at hinge member 30. The hammers may beconstructed from metal, such as extruded aluminum, or from ahigh-density plastic or other material suitable to the use of the clamp.

Referring to FIGS. 3 through 5, hinge member 30 comprises a cylindricalmember 32, provided at the top of the clamping hammer 28 and extendingthe length of the clamping hammer 28, and a cooperating groove 34 (FIGS.4 and 5) provided within the clamp body 10, the groove 34 sized toreceive the cylindrical member 32 such that hammer 28 is adapted tofreely pivot about the longitudinal axis of hinge member 30. Duringassembly of the clamp, a series of inwardly extending detents (notshown) may be provided at each end of the groove 34 to retain theclamping hammer 28 within the groove 34. The hinge member 30,cylindrical member 32, and clamping hammers 28 are also illustrated inFIG. 2.

As best shown in FIG. 4, the adjustment screws 18 are aligned transverseto the longitudinal axis of the clamping hammers 28. Selectively turningthe adjustment screw 18 will cause it to move inwardly or outwardly andconsequently, into and out of engagement with a respective clampinghammer 28. When a standing seam SS is disposed interior of clamp body10, and the adjustment screws 18 associated with the clamping hammers 28are turned inwardly, the hammers are likewise caused to pivot inwardlyabout hinge 30 and engage against the upstanding portion 6 of a seam SS.The L-shape of the clamping hammers 28 allow the head portion 8 of theseam SS to be received between the hammers without damaging the head.The present invention generates a clamping pressure against the seam SSthat is continuous and evenly distributed along the entire length of theclamp assembly CA. By spreading the load along the length of the clamp,damage to the seam SS is avoided and failure of the clamp is greatlyreduced. The head portion 8 is also shown in FIG. 5.

As best shown in FIG. 5, after the seam SS is engaged by the clampinghammers 28, the locking screws 20 associated with each of the clampinghammers 28 are tightened which causes the screw to contact cylindricalmember 32 and prevent pivoting of hinge 30 which is then in a lockedposition. As is apparent, to remove the assembly from a seam SS, theadjustment screw 18 and locking screws 20 are loosened which causes theclamping hammers 28 to pivot out of engagement thereby allowing theclamp to be separated from the seam SS.

FIG. 6 illustrates an alternative embodiment of the present inventionwhereby the inwardly facing surfaces of the clamping hammers 28 havesecured to the surfaces an elastomeric coating (or a sheet) of materialto provide an isolation gasket, membrane or filler material 36 forpurposes of, for example, increased friction, dampening vibration orproviding insulation to the clamped seam or otherwise function as aspacer. Each of the clamping hammers 28 includes a cylindrical member32. The clamping assembly CA also includes adjustment screws 18 thatengage the clamping hammers 28 through the sides 14. A threaded aperture22 is provided within the top 12.

FIG. 7 illustrates the clamp assembly CA of the present invention whenclamped to a double lock standing seam with one of the clamping hammers28 engaging the head portion 8 of the seam. In this embodiment, theclamping hammers 28 are angled inwardly to a greater degree than wouldbe the case with an overlap type standing seam. The invention is adaptedto accommodate different kinds of seams having varying shapes and headsizes. A threaded aperture 22 is provided within the top 12 of the clampbody 10. Each of the clamping hammers 28 include a cylindrical member32. The adjustment screws 18 engage the clamping hammers 28 and causethem to pivot about cylindrical members 32.

FIG. 8 illustrates the clamp assembly CA of the present invention whenclamping to a trapezoid double lock type standing seam with one of theclamping hammers 28 engaging the head portion 8 of the seam. The clampassembly CA includes a clamp body 10, adjustment screws 18, and clampinghammers 28. The clamp body 10 includes a top 12 and sides 14. Each ofthe clamping hammers 28 include a cylindrical member 32. The adjustmentscrews 18 engage the clamping hammers 28 and cause them to pivot aboutcylindrical members 32.

FIG. 9 illustrates an alternative embodiment of the present invention.The clamping hammer 28 noted earlier are interchanged in this embodimentto adapt the clamp assembly CA to clamp an angled seam AS. In thisembodiment, one of the two clamping hammers 28 in FIGS. 2 through 5 isreplaced with an angled seam clamping hammer 38. The angled seamclamping hammer 38 is shown to have a stepped configuration toaccommodate the head portion 8 of the angled seam AS which extendstransverse to the longitudinal axis of the seam. One of the adjustmentscrews 18 engages the angled seam clamping hammer 38 through the clampbody 10. The other of the adjustment screws 18 engages the clampinghammer 28.

FIG. 10 illustrates a further embodiment of the present invention. Bothclamping hammers in this embodiment are changed from that shown in theprevious embodiments so as to adapt the clamp assembly CA for clamping aseam having a round head 8. The round head clamping hammers 42 includean abutment region 40 that extends inwardly and includes a downwardlysloping surface 44 for engaging the lower regions of the rounded head 8and jaw portions 46 for engaging the upstanding portion 6 of the seam.The adjustment screws 18 engage the round head clamping hammers 42through the clamp body 10.

FIG. 11 illustrates another embodiment of the present invention. Bothclamping hammers in this embodiment are changed from that shown in theprevious embodiments so as to adapt the clamp assembly CA for clamping aseam having an offset head 8. The offset head clamping hammers 48 and 50have different thicknesses and heights. Offset head clamping hammer 50has a greater height than offset head clamping hammer 48 and furtherincludes a jaw portion 52. Offset head clamping hammer 48 includes athickened region or abutment 54 so that when the hammers are urgedagainst the offset head 8, it is held securely between both hammers andthe top 12 of the clamp body is maintained parallel to the surface fromwhich the seam extends. The adjustment screws 18 engage the offset headclamping hammers 48 and 50 through the clamp body 10.

FIG. 12 illustrates another embodiment of the present invention. In thisembodiment, the interior wall surfaces 58 of the clamp body 10 areprovided with parallel keyway tracks 60 extending the length of theclamp for selectively receiving a gasket or membrane 56 having a malekeyway portion 62 adapted to interfit and interlock the keyway track 60.A modified clamping hammer 64 is provided at the opposite side of thegasket or membrane 56. The modified clamping hammer 64 is shown toinclude a keyway track 66 for receiving a male keyway portion 68 ofgasket or membrane 70. An adjustment screw 18 (not shown) is provided tocause the modified clamping hammer 64 to move inwardly and clamp andinsulate (sound, vibration, etc.) a seam between the resilient gasket ormembrane 56 and 70.

FIG. 13 is an alternative embodiment of the clamp assembly CA of FIG. 12wherein a clamping hammer 28 as shown in FIGS. 2 through 5 is used inplace of the modified clamping hammer 64 of FIG. 12 to clamp the seam(not shown) between a gasket or membrane 56 and the clamping hammer 28by way of adjustment screws (not shown) and locking screws (not shown).As can be seen, the gasket or membrane 56 is provided with a key member62 that interlocks with the interior wall 58 of U-shaped member 10 atfemale keyway 60. The clamping hammer 28 includes a cylindrical member32 that resides within a hinge groove 34 that is within the clamp body10 of the clamp assembly CA.

Turning to FIG. 14A, a clamp assembly CA provided with a two-piece clampbody is shown. This embodiment is well adapted for attachment torelatively larger standing seams where the clamping hammers are sized orotherwise shaped such that a one-piece clamp body is impractical orotherwise not well suited for the application. The clamp assembly CA isshown for attachment to a standing seam SS that is T-shaped. As isapparent, this embodiment is adapted to be connected to a standing seamother than a T-shaped seam or to some other upstanding member such as ajoist, beam, etc. The clamp body 102 comprises a first portion 104 andsecond portion 106. Each of the first portion 104 and the second portion106 may be of variable width depending upon the dimension of thestanding seam SS to be clamped.

Referring to FIGS. 14A and 14B, each of the first portion 104 and thesecond portion 106 is provided with a separate one of a pair of movablejaws or hammers 108 that are shown to be generally L-shaped. As isapparent, the shape of the hammer 108 is variable depending upon thespecific application for the clamp. In the present embodiment, the lowerportion of the hammer 108 is increased in size so that it willeffectively clamp against the underside of the T-shaped standing seam SSas best shown in FIG. 14B. Referring to FIG. 14A, the hammers 108 extendthe length of the clamp portions 104 and 106 and are pivotally securedwithin the respective clamp portions 104, 106 at hinge member 110. As inthe embodiments described earlier, hinge members 110 comprises acylindrical member 112 provided on each hammer that is adapted toaxially rotate within a cooperating groove that extends within each ofclamp portions 104 and 106 and as shown in the figure. Adjustment screws118 and locking screws (not shown) as set forth in the earlier notedembodiments are provided.

The top surface 116 of the first clamp portion 104 is provided with anaperture 120 having variable size that cooperates with a threadedaperture 122 provided in the top contact surface 124 of second clampportion 106. A bottom contact surface 130 is provided on first clampportion 104. Top and bottom contact surfaces will engage against eachother when the clamp is in an assembled position as will be furtherexplained below. An abutment 128 shown in FIGS. 14A and 14B, extendsupwardly from second clamp portion 106 and functions as a stop memberfor limiting the width of the clamp when assembled and as best shown inFIG. 14B. It is within the scope of the present invention to not providean abutment. A connecting member 126 shown in the FIGS. 14A and 14B tobe a screw is provided and adapted to be received within apertures 120and 122 (FIG. 14A) to interconnect the two clamp portions of the clampassembly CA of FIGS. 14A and 14B and secure it to a standing seam asbest shown in FIG. 14B. As is apparent, a washer of varying diameter maybe provided to accommodate interconnection of the two clamp portionswhen a clamp having a relatively greater width is required.

The embodiment shown in FIGS. 14A and 14B reduce the width of the clampbody 102 from that which would otherwise be necessary if the clamp body102 were constructed from a single unitary piece. Accordingly, the clampbody 102 in this embodiment is adapted to interconnect T-shaped standingseams of variable width without the need to provide several clamp bodiesof varying widths. The first and second clamp portions may be machinedor cut to any desired length. The clamp portions and the hammers 108 maybe constructed of any suitable material adapted to be shaped via,extrusion, casting or injection molding.

Turning to FIG. 15, an alternative embodiment of the clamp shown inFIGS. 14A and 14B is shown. In this embodiment, the top contact surface124 and the bottom contact surface 130 are shown to be serrated orotherwise scoured or rendered not smooth. When the clamp is assembled,friction between the first clamp portion 104 and the second clampportion 106 is increased and any lateral movement of the clamp portionsrelative to each other is prevented. Other means to enhance connectionbetween the surfaces are within the scope of the present invention. Forexample, the top and bottom contact surface may be provided with acooperating set of teeth of varying width and depth depending upon theapplication of use. The cooperating set of teeth are adapted to meshtogether or otherwise interconnect so as to allow indexing of the clampwidth. The clamp assembly CA further includes a connecting member 126.The connecting member 126 is shown engaging the first clamp portion 104and the second clamp portion 106. A hammer 108 extends downward from theupper longitudinal groove 114. An adjustment screw 118 is shown engagingthe hammer 108. The hammer 108 is shown engaging the seam SS.

FIGS. 16A and 16B illustrate a further modification of the clamp shownin FIGS. 14A and 14B. In this embodiment, a T-shaped groove 134 isprovided within the top surface 116 of the first portion 104 and extendslongitudinally along the length of the clamp portion. The connectingmember 126 and aperture 120 shown in the earlier embodiments are alsoprovided, but are not shown in these figures. A straight extensionmember 136 (FIG. 16A) or an angled extension member 138 (FIG. 16B) areshown to extend upwardly from the top surface 116 of the first clampportion 104. Each of the extension members 136 and 138 are provided witha T-shaped end portion 140 adapted or otherwise shaped to be receivedwithin the T-shaped groove 134 as shown. The extension members 136 and138 may be used as supports for securing supplementary structures to theclamp after it has been secured to a standing seam. For example, aconduit or other object that needs to be run along the length of a roof.As is apparent, it is within the scope of the invention to vary the sizeand shape of the extension member depending upon the applicationrequired and to include one or more features of the embodiments notedabove. It is also within the scope of the present invention to providethe T-shaped slot within a separate block as opposed to within the clampbody portion 104. The block is then secured to the top of the clampportion by screws or other connection means. This enables the T-shapedslot to be varied relative to the clamp body. For example, it could bealigned transverse to the longitudinal axis of the clamp body. FIGS. 16Aand 16B also illustrate the adjustment screws 118 engaging the hammers108.

FIGS. 17A and 17B illustrate another embodiment of the present inventionwhere the location of the hinge members is reversed from that as shownin the previous embodiments together with an alteration of the hammerconfiguration. This embodiment expands the number of applications forwhich the clamp may be adapted and/or improves the ease-ability ofclamping to certain standing seams.

Turning to FIGS. 17A and 17B, the clamp body 102 is shown to include anupper longitudinal groove 114 as depicted in the earlier describedembodiments and a pair of lower longitudinal grooves 142 including apair of recess portions 141 that are mirror images of each other. As isapparent, it is within the scope of the present invention to provideonly lower longitudinal grooves if desired. Also, the clamp body 102 maybe modified to increase its width or height or otherwise be providedwith a greater mass so as to accommodate standing seams having aincreased height or greater load requirements. The reverse hammer 144 isshown to have a generally S-shaped configuration as opposed to thegenerally L-shaped configuration of the above noted embodiments. Eachreverse hammer 144 is provided with a horizontally extending cylindricalmember 112 (FIG. 17A) similar to that described above with respect tothe earlier embodiments and in addition, a head portion 146 forcontacting against a standing seam to be clamped. A leg portion 148(FIG. 17A) extends between and interconnects the cylindrical member 112(FIG. 17A) to the head portion 146. As is apparent, it is within thescope of the present invention to provide the reverse hammer with ashape other than an S-shape depending upon the application of use.

As best shown in FIG. 17A, the recess portions 141 of the clamp body 102are adapted to receive the head portion 146 of each of the hammers 142so that a standing seam SS may be received within the interior of theclamp body 102 prior to clamping. Turning to FIG. 17B, the device isshown clamping a standing seam SS whereby the adjustment screws 118 areturned inwardly to cause the head portion of each hammer 142 to moveinwardly and engage against a standing seam SS. Once the seam has beenproperly engaged, the locking screws (not shown) are sufficiently turnedso that the hinge member for each hammer 142 is fixed in its position.

FIG. 18 discloses an embodiment where the clamping hammers 28 adapted tobe secured to a standing seam SS and where the sides of the seam are ofunequal height. In this embodiment, a standing seam SS has a first side150 of a first height and a second side 152 having a height greater thanthat of the first side 150. Seam lips 154, 167 are provided andcooperate to form a seam head. The sides 14 of the clamp body 102provided with a height that corresponds to the respective sides of thestanding seam SS. In addition, each of the clamping hammers 28 areprovided with a height that corresponds to the height of either thefirst side 150 or the second side 152 of the clamp. As can be seen, theadjustment screws 118 are positioned at different clamp heights tocorrespond with the height of the respective clamping hammer 28.

FIGS. 19 and 20 disclose a further embodiment where the clamping hammershave an unequal height. In this embodiment the standing seam SS isL-shaped and the hammers are adapted to provide a uniform clamping forceagainst the standing seam SS. The shorter clamping hammer 156 is shownin the figures to engage the standing seam SS just under the seam lipwhereas the clamping hammer 158 having a greater length is shown toengage the standing seam SS a distance below that of clamping hammer156. Clamping hammer 158 provides more clearance when the clampingassembly is placed onto a seam to be clamped. This embodiment alsoallows for a more uniform clamping force to be provided against the seamthan would otherwise be the case if the hammers were the same length. Inaddition, two sets of grooves 114 are provided within the clamp body102. In this way, the clamp assembly CA is adapted to engage an L-shapedstanding seam SS including a seam lip that is oriented transverse toeither side of the standing seam SS. Referring to FIG. 19, the clampinghammer 158 includes a cylindrical member 112. Referring to FIG. 20, theclamping hammer 156 includes a cylindrical member 112. Referring toFIGS. 19 and 20, adjustment screws 118 engage the clamping hammers 156and 158. The connecting member 126 engages the head of the standing seamSS through the clamp body 102.

Turning to FIGS. 21 and 22 a gravity clamping hammer adapted to slideperpendicular toward a standing seam under action of the set screws andlock the clamp to a standing seam. When the set screws are loosened,clamping hammer will recede away from the seam due to gravitationalforces. Referring to FIG. 21, the clamp body 102 is provided with a pairof cooperating recesses 160 that extend the longitudinal axis of theclamp body 102 and have a general configuration in cross-section of aparallelogram. A slot 161 is provided within each of the side walls 24of the interior region 16 to provide an opening between the clampinterior region 16 and the recesses 160. A clamping hammer 162 isdisposed within each recess 160. Referring to FIG. 22, the clampinghammer 162 comprises a head portion 166 (also see FIG. 21), neck 168 andend portion 170. The opposite ends of the clamp body may be staked orpinned to prevent the clamping hammer 162 from sliding out of the clampbody 102.

In operation, when the adjustment screws 118 (also in FIG. 21) areturned clockwise, it moves inwardly and impinges upon the end portion170 of the clamping hammer 162. This causes the clamping hammer to slideperpendicular toward the standing seam to clamp the same. To loosen theclamp, the adjustment screws 118 are turned counterclockwise whereby theclamps slide away from the standing seam under the force of gravity.FIG. 21 illustrates an embodiment whereby the clamp body 102 may bemachined to provide an upper recess so as to accommodate a standing seamhaving a greater height. Clamp body 102 may be manufactured byextrusion, casting or injection molding, and the gravity-type clampinghammers 162 may be manufactured in a variety of sizes and lengths andfrom a number of materials, including, but not limited to, metal,elastomeric rubber, DELRIN or other thermoplastics having highstiffness, high or low friction and excellent dimensional stability.FIGS. 21 and 22 also illustrate connecting members 126 extending intothe clamp body 102.

FIG. 23 illustrates an alternative embodiment of the invention shown inFIGS. 21 and 22. In this embodiment, the slot associated with therecesses 160 is removed and the entire inward face of the recess 160 isopened to receive a clamping hammer 162 having an expanded neck portion174 that generally occupies the entire recess 160. A head portion 166 isalso provided to engage against a standing seam. The adjustment screw118 extends through the clamp body 102 and engages the end portion 170of clamping hammer 162. A connecting member 126 extends downward intothe clamp body 102.

FIGS. 24 and 25 disclose alternative embodiments of the invention shownin FIGS. 21 through 23. FIG. 24 discloses a clamp body 102 that combinesa gravity type clamping hammer 162 as set forth in FIG. 22 incombination with a clamping hammer 28 as disclosed in FIG. 2. Anadjustment screw 118 engages the gravity type clamping hammer 162. Asecond adjustment screw is not provided for hammer 28. A connectingmember 126 engages the clamp body 102. FIG. 25 discloses a clamp body102 that combines a gravity type clamping hammer 162 as set forth inFIG. 23 in combination with a clamping hammer 28 as set forth in FIG. 2.As illustrated, the gravity type clamping hammer 162 includes a headportion 166. An adjustment screw 118 engages the gravity type clampinghammer 162. A second adjustment screw (not shown) may be provided forhammer 28.

FIG. 26 discloses another embodiment of the present invention thatincludes detent type hammers or blocks instead of pivoting or gravityhammers. A cooperating pair of hammers or blocks 176 is shown retainedwithin a generally C-shaped recess or cavity forming the interior regionof the clamp body 102. The detent type hammer or block 176 may bemanufactured by extrusion, casting or injection molding and in a varietyof sizes and lengths and from a number of materials, including, but notlimited to, metal, elastomeric rubber, DELRIN or other thermoplasticshaving high stiffness, higher or low friction and excellent dimensionalstability. Adjustment screws 118 extending transverse to thelongitudinal axis of the block 176, and through the I-shaped leg member180, are rotated and contact the block 176 to urge it inwardly against astanding seam clamp (not shown). Once both of the blocks 176 haveadjusted against a standing seam clamp, pair of locking members 178shown to be screws or detents are engaged to force a downward pressureagainst the aligned block thereby locking it into place. It is withinthe present invention to provide a groove in the block 176 that isaligned perpendicular to the longitudinal axis of the hinge groove 34for receiving the locking member 178. This assists in retaining theblock within the clamp body and preventing it from falling out untilclamped against the seam.

FIG. 27A discloses a further embodiment whereby a single elongatedshaped block 176 is provided to engage against an L-shaped standing seam(not shown). FIG. 27B discloses another embodiment whereby a singleelongated shaped block 176 is provided to engage against a verticalstanding seam having no head portion (not shown). The clamp body 102 isnot provided with a single L-shaped leg member 180 with the opposite legmember 182 shown to be generally planar. FIG. 27A illustrates a part ofthe L-shaped leg member 180. Referring to FIGS. 27A and 27B, anadjustment screw 118 is illustrated as extending through the L-shapedleg member 180 of the clamp body 102 and engaging the elongated shapedblock 176. A locking member 178 is illustrated extending through the topof the clamp body and engaging the elongated shaped block 176.

FIGS. 28A and 28B are directed to a further embodiment of the presentinvention whereby the clamp body is spring-loaded to retain a detentblock 176 within the interior region of the clamp body. FIG. 28Adiscloses a detent block 176 that has been shaped at the top and bottomregions to allow it to pivot inwardly when engaged by an adjustmentscrew 118. Referring to FIGS. 28A and 28B, as can be seen, the bottomedges 184 of detent block 176 is tapered inwardly to provide a pivotpoint at the bottom of the block. The upper portion of the detent block176 is provided with a through-hole 186 through which a retaining rod188 is inserted, the retaining rod 188 being secured at both ends to thesides of the clamp body 102. The through-hole 186 is illustrated in FIG.28A. The retaining rod 188 is threaded through a spring member 189 andis sized within the interior of the clamp body 102 such that it willurge the detent block 176 into an open position as shown in FIG. 28A.The spring member 189 is also illustrated in FIG. 28B. Referring toFIGS. 28A and 28B, a clamping hammer 28 is provided opposite the detentblock 176. As best shown in FIG. 28B, when the adjustment screw 118 isrotated clockwise, it is caused to impinge against the detent block 176and causes it to pivot inwardly against the force of the spring toengage a standing seam (not shown). The spring ensures the block willalways return to a open position away from the standing seam when theadjustment screws 118 are unscrewed and be prevented from falling out ofthe clamp body 102. A locking screw as shown in FIG. 26 may be providedto lock the clamp into place after engaging a standing seam.

FIG. 29A is another embodiment of the present invention and discloseshinged pivoting hammers 190 that operate in the manner as disclosedearlier but the hammers slide in the ends of the clamp. The head portion192 of each hammer is custom shaped to match and engage the contours ofthe standing seam SS. FIG. 29B is an alternative embodiment thatprovides a non-hinged detent block 194 the interior surface of which iscustom shaped to match and engage the contours of the standing seam SS;for example, the head portion 192. A pair of locking screws 178 is alsoprovided. FIGS. 29A and 29B both illustrate the adjustment screws 118extending through the clamp body 102 and engaging a corresponding one ofthe hinged pivoting hammers 190.

FIGS. 35 through 38 disclose an alternative embodiment of the presentinvention. Turning to FIG. 35, a washer and rivet 196 is provided toretain a fastener 198 in place and prior to actuation of the adjustmentscrew 118. The fastener 198 is provided with a T-shaped recess adaptedto receive the washer and rivet 196. Fastener 198 is made with enoughtolerance within the T-shaped recess so as to allow it to pivot aboutthe washer. This enables the fastener 198 to adapt to seams that may beout of plane or otherwise be slightly angled along the longitudinalaxis. The range of pivot of fastener 198 compensates for slightvariations in the plane of the seam by matching the slight angulardifferences. It is further noted that a gasket or other type of devicemay be applied to the fastener 198 to create a better contact surfacehaving higher shear. FIG. 36 illustrates the entire clamp assembly forthis embodiment. All of the adjustment screws 118 are rotated inwardlyto align the washer and rivet 196 so that the fastener 198 can be slidover each of the washers to align it within the interior of the clampbody 102. As best seen in FIG. 37, the adjustment screws 118 are furtherrotated to urge the fastener 198 against the head of a standing seam SSto clamp the same. In the alternative, the washer and rivet 196 may bereplaced with a freely spinning nut member to secure the washer to theend of the screw member 118. Referring to FIGS. 36 and 37, the clampingassembly CA is also illustrated with a clamping hammer 28 positioned onthe opposite side of the clamp body 102 from the rivet 196 and fastener198. The clamp hammer 28 is positioned against the standing seam SS.FIG. 38 illustrates a further embodiment where the clamping hammer isreplaced with a gasket 56 which is received within a keyway track forreceiving a male keyway portion of the gasket. The clamping assembly CAof FIG. 38 also includes the rivet 196, fastener 198 and adjustmentscrew 118. The adjustment screw 118 extends through the clamp body 102and into the fastener 198. Clamp body 102 may be manufactured byextrusion, casting or injection molding and the fastener 198 may bemanufactured in a variety of sizes and lengths and from a number ofmaterials, including, but not limited to metal, elastomeric rubber,DELRIN or other thermoplastics having high stiffness, high or lowfriction and excellent dimensional stability and as noted earlier.

FIGS. 30 through 34B disclose another embodiment of the presentinvention and in particular a tool application for spring loading theclamp member. FIGS. 30 and 31 illustrate the tool member 200 shown tocomprise a generally U-shaped member provided with a finger hole 202,the finger hole 202 being shown in FIG. 31. As best shown in FIG. 33,the tool 200 is adapted to be slid over a standing seam SS to beclamped. FIG. 32 illustrates the clamp embodiment shown in FIGS. 17A and17B but having the clamping hammers 144 loaded using a pair of springmembers 204 with the use of adjustment screw 118 (not shown) to tightlyclamp the hammers 144 against a seam. As illustrated in FIG. 32, thehammers 144 can include a cylindrical member 112. The clamping assemblyCA also includes the clamp body 102. It is within the scope of thepresent invention to not employ adjustment screws if the specificapplication does not require them. After the standing seam is covered bythe tool 200, the user slides the clamp assembly CA over the top of thetool 200 and as best shown in FIG. 34A, which in turn causes thespring-loaded hammers to be pushed out of the way and into an openposition so that the standing seam can be received within the interiorregion of the clamp. The spring members 204 are illustrated as beingcompressed between the head portion 146 of the clamping hammers 144 andthe clamp body 102. Once the clamp is in place, the user will pull thetool 200 from the interior of the clamp by grasping the finger hole 202of FIG. 31. As shown in FIG. 34B, the spring-loaded hammers are urgedinto engagement against the sides of the standing seam to clamp thesame. The spring members 204 are extended away from the clamp body 102of the clamp assembly CA, and the cylindrical member 112 pivots ascompared with FIG. 34A, rotating the head portion 146 toward thestanding seam.

FIG. 39 illustrates another embodiment of the present invention whereinthe body 102 of the clamping assembly CA is provided with a pair ofnotches that extend along the longitudinal axis of the clamp body so asto receive a clamping hammer 201 that is provided with a hook member atone end which is received within a notch and is adapted to pivotinwardly or outwardly under action of the adjustment screw 118.

It is within the scope of the present invention to vary the use ofadjustment and locking screws depending upon the end use of the clamp.In some situations, a locking screw may not be necessary and the forceof the adjustment screw is sufficient to lock the clamp onto the seam.The use of multiple locking screws has been seen to reduce any vibrationof the clamp due to conditions during use. As is apparent, in allembodiments the clamp body 102 and all components of the assembly may bemanufactured by extrusion, casting or injection molding and the variousclamp components may be manufactured in a variety of sizes and lengthsand from a number of materials, including, but not limited to metal,elastomeric rubber, DELRIN or other thermoplastics having highstiffness, high or low friction and excellent dimensional stability andas noted earlier. The clamp body and all components forming the clampassembly may be machined and milled as required in order to adapt it toits specific end use. The embodiments employing gaskets can be providedwith hinges and without employing adjustment screws. It is also withinthe scope of the present invention to interconnect two or more clampsthat are aligned parallel to each other with a bridge member secured ateach end to a separate clamp. The bridge member may be constructed fromany suitable material including, but not limited to, aluminum, stainlesssteel, etc. The bridge member would allow for the optional attachment ofrooftop assembly devices such as fall protection structure, gutters,etc.

While this invention has been described as having a preferred design, itis understood that it is capable of further modifications, uses andadaptations, both in whole and in part, while following the generalprinciple of the invention and including such departures from thepresent disclosure as is known or customary practice in the art to whichthis invention pertains, and as may be applied to the central featuresof this invention.

What is claimed is:
 1. A clamping assembly, comprising: a clamp bodybeing generally U-shaped, the clamp body includes a top wall, a firstside wall and a second side wall each extending downwardly from the topwall, and an interior region bound by the top wall, the first side wall,and the second side wall; a first clamping hammer and a second clampinghammer each pivotally secured within the top wall and extending into theinterior region with pivoting restricted to within the interior region;and a first adjustment screw extending through the first side wall toselectively engage against the first clamping hammer and causing thefirst clamping hammer to pivot toward the second clamping hammer, andthe first side wall rotational stops the first clamping hammer; and asecond adjustment screw extending through the second side wall toselectively engage against the second clamping hammer and causing thesecond clamping hammer to pivot toward the first clamping hammer, andthe second side wall rotational stops the second clamping hammer.
 2. Theclamping assembly of claim 1, wherein: the first clamping hammer beingpivotally secured within the top wall proximate to the first side walland the second clamping hammer being pivotally secured to the clamp bodywithin the second side wall proximate to the top wall.
 3. The clampingassembly of claim 1, wherein: the first clamping hammer includes a firstportion positioned within the interior region, the first portion isplanarly abutable against the first side wall.
 4. The clamping assemblyof claim 3, wherein: the second clamping hammer includes a secondportion positioned within the interior region, the second portion isplanarly abutable against the second side wall.
 5. The clamping assemblyof claim 1, wherein, the first clamping hammer is generally an L-shape,with the L-shape facing toward the second side wall.
 6. The clampingassembly of claim 1, wherein, the first clamping hammer includes anabutment located with the interior region and facing the second clampinghammer.
 7. A clamping assembly, comprising: a clamp body being generallyU-shaped, the clamp body includes a top wall, a first side wall and asecond side wall each extending downwardly from the top wall; aninterior region bound by the top wall, the first side wall, and thesecond side wall; a first clamping hammer and a second clamping hammereach pivotally secured within the clamp body and extending into theinterior region with pivoting restricted to within the interior region;and a first adjustment screw extending through the first side wall toselectively engage against the first clamping hammer and causing thefirst clamping hammer to pivot toward the second clamping hammer, andthe first side wall rotational stops the first clamping hammer; and asecond adjustment screw extending through the second side wall toselectively engage against the second clamping hammer and causing thesecond clamping hammer to pivot toward the first clamping hammer, andthe second side wall rotational stops the second clamping hammer.
 8. Theclamping assembly of claim 7, wherein: the first clamping hammerincludes a first portion positioned within the interior region, thefirst portion is planarly abutable against the first side wall.
 9. Theclamping assembly of claim 8, wherein: the second clamping hammerincludes a second portion positioned within the interior region, thesecond portion is planarly abutable against the second side wall. 10.The clamping assembly of claim 7, wherein, the first clamping hammer isgenerally an L-shape, with the L-shape facing the second side wall. 11.The clamping assembly of claim 7, wherein, the first clamping hammerincludes an abutment located with the interior region and facing thesecond clamping hammer.
 12. The clamping assembly of claim 7, wherein:the clamp body includes a first groove and a second groove; the firstclamping hammer includes a first cylindrical member that is pivotablewithin the first groove; and the second clamping hammer includes asecond cylindrical member that is pivotable within the second groove.